#include <stdio.h>
#include <unistd.h>
#include <string.h>
int main()
{
    //C接口
    printf("hello printf");
    fprintf(stdout,"hello fprintf");
    fputs("hello fputs",stdout);
    
    //系统接口
    const char* msg = "hello write\n";
    write(1,msg,strlen(msg));//不要把\0带上

    sleep(5);
    // fork();
    
    
    return 0;
}
